Apurímac spinetail

The Apurimac spinetail (Synallaxis courseni) is a Vulnerable species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is endemic to Peru.

The Apurimac spinetail is 17 to 18 cm (6.7 to 7.1 in) long and weighs about 15 g (0.53 oz). The sexes have the same plumage. Adults have a pale gray supercilium on an otherwise dark gray face. Their forecrown is dark gray, their hindcrown and nape dark rufous, and their back, rump and uppertail coverts dark gray with a faint olivaceous tinge. Their wings are rufous with dark brown tips on the flight feathers. Their tail is dark sooty brown with a hint of rufous; the tail is very long and graduated, and the feathers have slightly pointed tips. Their throat is sooty black with pale gray edges to the feathers. Their breast, belly, and undertail coverts are dark gray; their flanks are dark gray with a faint olivaceous wash. Their iris is dark chestnut, their maxilla black or dark gray, their mandible bluish gray with a black tip, and their legs and feet dark gray.